US2687998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water aerating and filtering device
Assignee: Individual
•
Filing: 1951-09-18
•
Granted: 1954-08-31
•
Expires: 1971-09-18
Abstract
No abstract record available.
Inventors
- 👤 Edward J Mcleary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:16
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/04; A01K63/042
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US216961A
Cited
US1055082A
Cited
DE471715C
Cited
US1227732A
Cited
US1971796A
Cited
US1985854A
Cited
US2275428A
Cited
US2137397A
Cited
US2628447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |